QNetworkProxy Class Reference
[QtNetwork module]

Detailed Description

The QNetworkProxy class provides a network layer proxy.

QNetworkProxy provides the method for configuring network layer proxy support to the Qt network classes. The currently supported classes are QAbstractSocket, QTcpSocket, QUdpSocket, QTcpServer, QNetworkAccessManager and QFtp. The proxy support is designed to be as transparent as possible. This means that existing network-enabled applications that you have written should automatically support network proxy using the following code.

 QNetworkProxy proxy;
 proxy.setType(QNetworkProxy::Socks5Proxy);
 proxy.setHostName("proxy.example.com");
 proxy.setPort(1080);
 proxy.setUser("username");
 proxy.setPassword("password");
 QNetworkProxy::setApplicationProxy(proxy);

An alternative to setting an application wide proxy is to specify the proxy for individual sockets using QAbstractSocket::setProxy() and QTcpServer::setProxy(). In this way, it is possible to disable the use of a proxy for specific sockets using the following code:

 serverSocket->setProxy(QNetworkProxy::NoProxy);

Network proxy is not used if the address used in connectToHost(), bind() or listen() is equivalent to QHostAddress::LocalHost or QHostAddress::LocalHostIPv6.

Each type of proxy support has certain restrictions associated with it. You should read the ProxyType documentation carefully before selecting a proxy type to use.

Note: Changes made to currently connected sockets do not take effect. If you need to change a connected socket, you should reconnect it.